• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2013 Fiscal Year Annual Research Report

血管再生療法による脳アミロイド血管症の能動的制御とアルツハイマー病治療法の開発

Research Project

Project/Area Number 23390233
Research InstitutionNational Cardiovascular Center Research Institute

Principal Investigator

猪原 匡史  独立行政法人国立循環器病研究センター, 病院, 医長 (00372590)

Project Period (FY) 2011-04-01 – 2014-03-31
Keywordsアルツハイマー病 / アミロイド血管症 / 微小梗塞 / モデルマウス / βアミロイド / シロスタゾール / 臨床試験 / 医師主導治験
Research Abstract

アルツハイマー病(AD)患者の90%以上では脳表の血管にβアミロイド(Aβ)が沈着する脳アミロイド血管症(CAA)を合併する.さらに,Aβ沈着血管の近傍には,肉眼では確認できない微小な脳梗塞(皮質微小梗塞)が散在している.これまでの研究で,皮質微小梗塞の形成にCAAと脳低灌流が協働的に作用することが明らかとなった.さらに,AD剖検脳やCAAのモデルマウス(Tg-SwDIマウス)の脳血管平滑筋細胞には,ホスホジエステラーゼIII(PDEIII)の発現が亢進していた.PDEIIIの発現が亢進するとcAMPが減少し,血管拡張能や反応性が低下することから,PDEIIIの発現亢進がAD/CAAにおける微小梗塞の発生やAβ蓄積に中心的な役割を担うという作業仮説を立てた.そこで,PDEIII特異的阻害剤シロスタゾールを0.3%含有する餌(または対照餌)をTg-SwDIマウスに4-12か月齢,または1.5-15か月齢まで投与した.シロスタゾールを投与されたTg-SwDIマウスでは,対照餌を投与されたTg-SwDIマウスと比べて以下の7項目において有意な改善が見られた:1)5%二酸化炭素吸入下での脳血管反応性,2)同吸入下での脳循環予備能,3)脳表アセチルコリン灌流下での脳血管反応性,4)脳内Aβ蓄積量の減少,5)Y迷路試験で評価される認知機能,6)蛍光標識Aβ1-40投与後のAβクリアランス速度,7)電子顕微鏡下での血管内皮細胞,平滑筋細胞,周皮細胞の形態変化.さらに,後方視的な臨床観察では,シロスタゾールを投与されていた軽度認知障害患者では,未投与患者に比べて,有意にMMSEの低下が抑制されていた.
以上より,シロスタゾールなどの血管作動薬がAD治療の新潮流となる可能性が高いと考え,多施設共同の二重盲検プラセボ対照試験を医師主導治験として開始することとなった.

Current Status of Research Progress
Reason

25年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

25年度が最終年度であるため、記入しない。

  • Research Products

    (28 results)

All 2014 2013 Other

All Journal Article (19 results) (of which Peer Reviewed: 19 results) Presentation (9 results) (of which Invited: 6 results)

  • [Journal Article] Cilostazol add-on therapy in patients with mild dementia receiving donepezil: a retrospective study.2014

    • Author(s)
      Ihara M, Nishino M, Taguchi A, Yamamoto Y, Hattori Y, Saito S, Takahashi Y, Tsuji M, Kasahara Y, Takata Y, Okada M
    • Journal Title

      PloS ONE

      Volume: 9 Pages: e89516

    • DOI

      10.1371/journal.pone.0089516.

    • Peer Reviewed
  • [Journal Article] Effects of intravenous administration of umbilical cord blood CD34+ cells in a mouse model of neonatal stroke.2014

    • Author(s)
      Tsuji M, Taguchi A, Ohshima M, Kasahara Y, Sato Y, Tsuda H, Otani K, Yamahara K, Ihara M, Harada-Shiba M, Ikeda T, Matsuyama T.
    • Journal Title

      Neuroscience

      Volume: 263 Pages: 148-158

    • DOI

      10.1016/j.neuroscience.2014.01.018.

    • Peer Reviewed
  • [Journal Article] White matter pathology and disconnection in the frontal lobe in CADASIL.2014

    • Author(s)
      Craggs LJ, Yamamoto Y, Ihara M, Fenwick R, Slade JY, Oakley A, Roeber S, Duering M, Kretzschmar H, Kalaria RN.
    • Journal Title

      Neuropath Appl Neurobiol

      Volume: in press Pages: in press

    • DOI

      10.1111/nan.12073

    • Peer Reviewed
  • [Journal Article] A mouse model of chronic cerebral hypoperfusion characterizing features of cognitive impairment.2014

    • Author(s)
      Ihara M, Taguchi A, Maki T, Washida K, Tomimoto H.
    • Journal Title

      Methods Mol Biol

      Volume: 1135 Pages: 95-102

    • DOI

      10.1007/978-1-4939-0320-7_8.

    • Peer Reviewed
  • [Journal Article] 高血糖とアルツハイマー病.2014

    • Author(s)
      猪原匡史
    • Journal Title

      医学のあゆみ

      Volume: 249 Pages: 545-550

    • Peer Reviewed
  • [Journal Article] 注目される脳小血管病による認知症.2014

    • Author(s)
      猪原匡史
    • Journal Title

      Dementia Japan

      Volume: 28 Pages: 57-67

    • Peer Reviewed
  • [Journal Article] 認知症の診断と治療を目指した小血管病の管理2013

    • Author(s)
      猪原匡史
    • Journal Title

      Brain and Nerve

      Volume: 65(7) Pages: 801-809

    • Peer Reviewed
  • [Journal Article] Vascular and neurodegenerative pathways―will they meet?2013

    • Author(s)
      Kalaria RN, Ihara M.
    • Journal Title

      Nat Rev Neurol

      Volume: 9 Pages: 487-488

    • DOI

      10.1038/nrneurol.2013.164.

    • Peer Reviewed
  • [Journal Article] Development of Novel 123I-Labeled Pyridyl Benzofuran Derivatives for SPECT Imaging of β-Amyloid Plaques in Alzheimer's Disease.2013

    • Author(s)
      Ono M, Cheng Y, Kimura H, Watanabe H, Matsumura K, Yoshimura M, Iikuni S, Okamoto Y, Ihara M, Takahashi R, Saji H.
    • Journal Title

      PLoS ONE

      Volume: 8 Pages: e74104

    • DOI

      10.1371/journal.pone.0074104.

    • Peer Reviewed
  • [Journal Article] Structure-activity Relationships and in vivo Evaluation of Quinoxaline Derivatives for PET Imaging of β-Amyloid Plaques.2013

    • Author(s)
      Yoshimura M, Ono M, Matsumura K, Watanabe H, Kimura H, Cui M, Nakamoto Y, Togashi K, Okamoto Y, Ihara M, Takahashi R, Saji H.
    • Journal Title

      ACS Med Chem Lett

      Volume: 4 Pages: 596-600

    • DOI

      10.1021/ml4000707.

    • Peer Reviewed
  • [Journal Article] Cilostazol improves cognitive function in patients with mild cognitive impairment: A retrospective analysis.2013

    • Author(s)
      Taguchi A, Takata Y, Ihara M, Kasahara Y, Tsuji M, Nishino M, Stern D, Okada M.
    • Journal Title

      Psychogeriatrics

      Volume: 13 Pages: 164-169

    • DOI

      10.1111/psyg.12021.

    • Peer Reviewed
  • [Journal Article] Experimental and clinical challenge for neuroregeneration following stroke.2013

    • Author(s)
      Kasahara Y, Ihara M, Taguchi A.
    • Journal Title

      Front Neurol Neurosci

      Volume: 32 Pages: 69-75

    • DOI

      10.1159/000346416.

    • Peer Reviewed
  • [Journal Article] A highly reproducible model of cerebral ischemia/reperfusion with extended survival in CB-17 mice.2013

    • Author(s)
      Kasahara Y, Ihara M, Nakagomi T, Momota Y, Stern DM, Matsuyama T, Taguchi A.
    • Journal Title

      Neurosci Res

      Volume: 76 Pages: 163-168

    • DOI

      10.1016/j.neures.2013.04.001.

    • Peer Reviewed
  • [Journal Article] Association of Physical Activity with the Visuospatial/Executive Functions of the Montreal Cognitive Assessment in Patients with Vascular Cognitive Impairment.2013

    • Author(s)
      Ihara M, Okamoto Y, Hase Y, Takahashi R.
    • Journal Title

      J Stroke Cerebrovasc Dis

      Volume: 22 Pages: e146-151

    • DOI

      10.1016/j.jstrokecerebrovasdis.2012.10.007.

    • Peer Reviewed
  • [Journal Article] Vascular Risk Factors and Neurodegeneration in Ageing related Dementias:Alzheimer’s Disease and Vascular Dementia.2013

    • Author(s)
      Akinyemi R, Mukaetova-Ladinska E, Attems J, Ihara M, Kalaria RN.
    • Journal Title

      Curr Alzheimer Res

      Volume: 10 Pages: 642-53

    • DOI

      10.2174/15672050113109990037

    • Peer Reviewed
  • [Journal Article] Synthesis and Biological Evaluation of Novel Styryl Benzimidazole Derivatives as Probes for Imaging of Neurofibrillary Tangles in Alzheimer’s Disease.2013

    • Author(s)
      Matsumura K, Ono M, Yoshimura M, Kimura H, Watanabe H, Okamoto Y, Ihara M, Takahashi R, Saji H.
    • Journal Title

      Bioorg Med Chem

      Volume: 21 Pages: 3356-3362

    • DOI

      10.1016/j.bmc.2013.02.054.

    • Peer Reviewed
  • [Journal Article] Visualization of Lenticulostriate Arteries by Flow-Sensitive Black-Blood MR Angiography on a 1.5T MRI System: A Comparative Study between Subjects with and without Stroke.2013

    • Author(s)
      Okuchi S, Okada T, Ihara M, Gotoh K, Kido A, Fujimoto K, Yamamoto A, Kanagaki M, Tanaka S, Takahashi R, Togashi K.
    • Journal Title

      AJNR Am J Neuroradiol

      Volume: 34 Pages: 780-784

    • DOI

      10.3174/ajnr.A3310.

    • Peer Reviewed
  • [Journal Article] Suitability of the Montreal Cognitive Assessment against the Mini-Mental State Examination in the detection of vascular cognitive impairment.2013

    • Author(s)
      Ihara M, Okamoto Y, Takahashi R.
    • Journal Title

      J Stroke Cerebrovasc Dis

      Volume: 22 Pages: 737-41

    • DOI

      10.1016/j.jstrokecerebrovasdis.2012.01.001.

    • Peer Reviewed
  • [Journal Article] 認知症における血管病の重要性.2013

    • Author(s)
      猪原匡史
    • Journal Title

      脳循環代謝

      Volume: 24 Pages: 83-88

    • Peer Reviewed
  • [Presentation] Bench to bedside: using mouse models to identify new treatment approaches for Alzheimer’s disease.

    • Author(s)
      Masafumi Ihara.
    • Organizer
      Invited lecture: 19th Southampton Neuroscience Group (SoNG) Meeting
    • Place of Presentation
      Southampton
    • Invited
  • [Presentation] Generating rodent models of chronic cerebral hypoperfusion and investigating the pathogenesis of vascular cognitive impairment.

    • Author(s)
      Masafumi Ihara.
    • Organizer
      Plenary session (Special session on animal models of VCI). Vas-Cog2013
    • Place of Presentation
      Toronto
    • Invited
  • [Presentation] Lessons from rodent models characterizing features of vascular cognitive impairment.

    • Author(s)
      Masafumi Ihara.
    • Organizer
      Minisymposium (Animal models of VCI). Vas-Cog2013
    • Place of Presentation
      Toronto
    • Invited
  • [Presentation] シンポジウム5「血管性認知障害」血管性認知障害の病態-モデル動物を用いて明らかとなった知見-

    • Author(s)
      猪原匡史
    • Organizer
      第39回日本脳卒中学会総会
    • Place of Presentation
      大阪
    • Invited
  • [Presentation] 「認知症の発症にかかわる脳血管の機能」.

    • Author(s)
      猪原匡史
    • Organizer
      脳心血管抗加齢研究会2013
    • Place of Presentation
      大阪
    • Invited
  • [Presentation] シロスタゾールによる血管依存性βアミロイドクリアランスの促進.

    • Author(s)
      猪原匡史
    • Organizer
      脳循環代謝学会
    • Place of Presentation
      札幌
    • Invited
  • [Presentation] 「血管病としての認知症」

    • Author(s)
      猪原匡史
    • Organizer
      Vas-Cog Japan
    • Place of Presentation
      東京
  • [Presentation] S2-5-2中枢神経疾患治療に対するトランスレーショナルリサーチの現状とその課題.

    • Author(s)
      Masafumi Ihara.
    • Organizer
      Novel mechanism and therapy to treat patient with dementia. Neuro2013
    • Place of Presentation
      京都
  • [Presentation] Symposium S(4)-1.Vascular Dementia and Its Associated Conditions-Vascular Cognitive Impairment (VCI).Cerebral amyloid angiopathy and cognitive impairment.

    • Author(s)
      Masafumi Ihara.
    • Organizer
      第54回日本神経学会学術大会
    • Place of Presentation
      東京

URL: 

Published: 2015-05-28  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi